Paper cup



Jun 21 1 c. BARBIERI PAPER CUP Filed Oct. 2, 1925 2 Sheets-Shet 1 ELLE: M;

June 21, 1

C. BARBIERI PAPER CUP Filed 001:. 2, 1925 2 Sheets-Sheet 2 E E g I :1 B .69 sarqZiarh'efz Patented June 2.1,"1h27.

@NlTED TATES senate P A F i OE OESABE BARBIEBI, OI NEW YORK, N. Y. ASSIGNOB TO THE VORTEX MFG. 00.,

A CORPORATION OF ILLINOIS.

PAPER 6UP,

Continuation of applications filed July 3, 1922, Serial Nos. 572,518and 572,519. This application filed October 2, 1925. Serial No. 60,121.

- It is a further object of this invention to provide such a cup withouti any pointed places in the parts secured together by adhesive so thatthere will be no points likely to turn up or work loose,

It is a further object of this invention to provide a blank for such cups with a notch therein so located that the folds necessary to make the cups from the blank shall not int'ersect.

It is a further object of this invention to make a cup which is less likely to leak than the cups heretofore provided.

It is a further ob ect of this invention to provide a blank that can bereadily and-accurately positioned inthe cup forming machine. Qther and further important objects of this invention will be apparent from the disclosures in the accompanying drawings and description.-

- The invention (in a preferred form) is.

illustrated in the drawings and hereinafter more fully described.

In said drawin s: I 1

Figure 1 is a side view of the finished cup. Figure 2 is a view on a smaller scale of the opposite side of the cup.

Figured is a top plan view upon the same scale as Figure 1.

Fi ure 4 is a view of the blank from whic the cup is made.

' Figure 5 is a similar view ofthe opposite face of the blank.

Figure 6 is a view of the artly folded cup showing the result of the rst fold.

Figure 7 is a similar view showing the result of the second fold.

Figu a slightly modified construction.

Figure 9 is a view upon a smaller scale of the opposite side of the cup. shown in Figure 8. k

Figure 10 is a. top plan view of the same upon the same scale as Fi ure 8 Figure 11 is a view 0 one side of the itself.

re 8 is a view similar to Figure 1 ofblank from which the cup of Figure 8 is made.

Fi ure 12 is a similar view of the opposite side of the blank.

Figure 13 is a view of the partly formed cup. of Figure 8 showing the result of the first fold.

Figure 14 is a similar view showing the result'of the second fold.

In said drawings, having particular reference'to Figures 1 to 7, the cup is made from a blank having a curved edge 1. The main body of the blank is approximately a sector, one radius of which is the edge 2; the

other radial edge 3 of this sector is not the edge of the blank, but the blank continues therefrom to an edge 4, thus forming a flap 5. The l1ne 3 may correspond to actual phys ical structure, such as a scoring mark or a crease, or it may be merely the location of the fold, so that in the blank before .it is. folded to make the cup there is no physical structure corresponding to the line 31 The line 6, which bisects the sector, is similar to the line 3 in this respect.

One face of the flap 5 is covered with adhesive, as indicated by the shading in Figure 4. The other face of thefiap 5 is not supplied with adhesive, but the corresponding side of the main portion of the blank has a region thereon which is covered with adhesive. This region is located between the ,lines 3 and 6 near the center of the, curve 1,

shown at 8. Preferably, the sides of this notch are not straight, but are rounded so that each forms an'arc about a center slightlivl fartherfrom the center of curvature of t e edge 1 than are the walls of the notch The result is a star-like form of notch so that the blank has-threeblunt,

thus formed has had time to become firm,

the folding of the cup is completed by fold-' ing the point 9 into the position illustrated in Figure 2, where it is secured by means of the adhesive 7.

The creases made in the paper by this last fold are represented by the lines 10, 11 and 12. If it is desired, actual physical structure corresponding to these lines, such as creases or score marks, may be made in the blank before it is folded at all. Also, if it is desired, adhesive 13 may be applied to the region between the line 11 andthe notch 8, as illustrated'in Figure 4.

When the second fold (the fold illustrated in Figure 7) is made,the line of the fold will not cross the line 6 because of the notch 8. Thus no distortion or tearing or other serious strain upon the paper will occur at the notch, and the likelihood of the paper proless likely.

In the modified construction, shown in Figures 8' to 14, the blank from which the cup also'is made is of the general shape of the sector of a circle, having a,curved edge 14 and a radial edge 15. At the other edge theblank does not stop at the radial edge of the sector, but continues to form a flap 16 having an edge 17 parallel to the radial edge 18 of the sector. I

. In Figures 11 and 12 are shown two lines 19 and 20 which divide the .sector into three portions, the center portion being half of the. area of the sector. These lines mayrepresent actual physical structure, such as scoringmarks or creases, for facilitating the folding of the blank to form the cup, but

' they may also stand for the intended location of the folds and the blank may be made without any actual physical structure corresponding to these lines. The end 21 of the flap 16 is not in line with the radial edge 15,

but makes an angle therewith substantially equal to the angle between the edge 15 and the line 2Q. Lines 22, 23 and '24, forming a portion of a polygon surrounding the center ofrcurvature of the edge 14-, may also be actual physical structure as Just described or folds-to be described hereafter.

At the center of curvature of the edge 14 the blank'is provided with anotch 25. ,The edges of this notch arenot straightfbut are curved, the convex side 'of the curvebeing toward the notch. A star-shape is thus given to the notch,v the points of the star being in line with the lines 19 and 20. The curved edge of the notch 25 opposite the. line 22 merges with the oblique end 21 of'the flap, but the curved edge at the other side of the notchmeets the edge 15 at approximately right angles.

In forming acup from this blank, the first foldis made along the line 20, as is shown in Figure 13. This results in bringing the edge 15 into coincidence with the bisector of the sector. The next fold is made along the line 19. This result in bringing the edge 18 fold, which is shown at 27, is located upon the superposed lines 22, 23 and 24:. Theturned-up point 26 is secured, to the folded position by means of adhesive 28 on the lower end of the central portion of the sector. In a cup formed in this way the extremity' of the point 26 is not sharp but'is rounded and consequently is not likely to turn up away from the body of the cup.

.Moreover, the notch 25, by removing that portion of the material where the folds 19 and 20 would cross one another, does away with the necessityoffolding the paper in two directions at once and so it is not likely,

that the paper will be torn at this point. Because the seam made by the flap 16 overlapping the margin near the edge 15 is not near elther the'fold 19 or the fold 20, no strain is brought upon the seam made 1) this flap when the point 26 is folded as described. Consequently, all of the folding may be done at once without waiting for the seam to become firm first.

Thisca'se is a continuation and a consolidation of the subjects-matter of two appli-- cations file'd by me July 3, 1922, Serial Nos.

572,518 and 572,519, for improvements in paper cups.

I am aware that numerous details of construction may be varied through a wide range without departing from the principles of this inventlon, and I therefore do not purpose limiting the patent granted, otherwise than necessitated by the prior art.

l I claim as my invention:

may stand for the intended location of the i 1. A blank adapted to be folded for forming folded paper cups, embodying a sectorlike body having its straight edges termi mating in a point, one edge being adapted'to be folded into. a flap, said body having a notch in its other edge at the meeting point of the folds.

which the folds in the body converge.

3. A, blank adapted to be folded for forming folded paper cups, embodying a sectorlike body, formed with one of its straight edges longer than the other, said edges terminating in a point, said body having a multi-pointed notch in its lon 'er edgle at the point toward which the fOhfS in t e body 4. A blank adapted to be folded for forming folded paper cups, embodying a sectorlike body, formed with one of its stralght edges longer than the other, said body having a multi-pointed notch in its longer ed e at the point toward which the folds in t c body converge, the points in said notch 00- inciding with the lines of the folds in said 5. A blank adapted to be folded for forming folded paper cups, embodying a sectorlike body, formed with one of its straight converge.

edges lon er than the other, said. body having a mu ti-pointed notch in its longer edge at the point toward whlch the folds lIlSEtld body converge, the edges of said notch registering when said body is folded to form the point of the cup. befolded for form- 6. A blank adapted to ing folded paper cups, embodying a sectorlike body, formed with one of its straight "edges longer than the other, said body having a notch in its longer edge at the point toward which the folds in the body converge,

the edges of said notch being convexed toward said notch and registering when said body is folded to form the point of the cup.

7. A blank for forming fiat paper cups, comprising a sector-like body, and a flap ex- 1 edges meetln tending from onestraight edge thereof, said body, having a multi-pointed notch in one straight edge at the centerof curvature of,

said sector, the points .in said 'notch coinciding withthe lines of fold, said lines dividing said body in three parts, the area of the central one being a proximately equal to the combined area of t e other two.

8. A blank for forming paper cups including an approximately sector-shaped body, and a flap extending from. one radial edge thereof, said blank having a notch at the center of curvature of said sector, the edges of the notch bein convex toward the notch so as to form a figure shaed like a fraction of a star, the points of t e star being directed toward the radii of the sector which divide the sector into three portions, the area of the central one of which is approximately equal to the combined area of the other two.

9. A blank for forming a conical paper cup capable of folding into a flat sector shape and having a seam in the middle of one face, said blank having a main sector-shaped body and a flap along one radial edge and also having a notch at the point of the sector, said notch comprising three curved edges each convex toward thenotch whereby the notch has the shape of a fraction of a star having a plurality of olnts, the curved at one 0 said polnts being of substantia ly equal length and the re-v.

maining curved edge being of approximately half said length, one of the longer curved edges which is not adjacent the shorter curved edge boundin the flap along approximately half the lengt of said longer curved edge, and an adjacent part of the sector along the remainder of said longer curved edge.

In testimony whereof I scribed my name.

have hereunto sub- GESARE BARBIERI. 

